The Physics of Mental Energy: Nonequilibrium Brain Dynamics
Explore the physics of mental energy and nonequilibrium brain dynamics. Learn how entropy production and time-reversibility define alertness versus exhaustion.
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For a brain to be conscious and complex, it must be in a nonequilibrium steady state; that 'invigorated' feeling is literally the feeling of your brain successfully pushing back against the second law of thermodynamics.
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Physics and how they apply to neurology. Changing energy patterns from tired to invigorated. The practical applications of algebra, trigonometry, and calculus.
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The physics of mental energy is rooted in nonequilibrium brain dynamics. When you are alert and invigorated, your brain operates in a nonequilibrium stationary state, much like a fountain with constant energy flow. This state requires a continuous pump of energy to maintain its shape and function. In contrast, feeling tired or exhausted represents a shift toward equilibrium, where the brain's energy flow slows down and moves toward a more stagnant, basin-like state.
Being mentally 'on' or invigorated means your brain is actively producing more entropy and breaking symmetry in time. This process is a hallmark of nonequilibrium brain dynamics, where the brain is fighting against the 'heat death' of equilibrium. High entropy production indicates a high level of neural activity and energy flow, which distinguishes a focused, engaged mind from one that is experiencing a mid-afternoon slump or general mental fatigue.
Time-reversibility refers to how neural activity looks when viewed forward versus backward. In a state of rest or exhaustion, brain activity becomes more time-reversible, meaning the patterns would look similar if played in reverse. However, when the brain is in a nonequilibrium stationary state—characterized by high mental energy—it breaks this symmetry. This lack of time-reversibility is a physical indicator that the brain is actively processing information and maintaining a high-energy, invigorated state.
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Creato da alumni della Columbia University a San Francisco
"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."
"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."
"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."
"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."
"Reading used to feel like a chore. Now it’s just part of my lifestyle."
"Feels effortless compared to reading. I’ve finished 6 books this month already."
"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."
"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."
"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"
"It is great for me to learn something from the book without reading it."
"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."
"Makes me feel smarter every time before going to work"
"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."
"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."
"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."
"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."
"Reading used to feel like a chore. Now it’s just part of my lifestyle."
"Feels effortless compared to reading. I’ve finished 6 books this month already."
"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."
"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."
"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"
"It is great for me to learn something from the book without reading it."
"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."
"Makes me feel smarter every time before going to work"
"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."
"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."
"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."
"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."
"Reading used to feel like a chore. Now it’s just part of my lifestyle."
"Feels effortless compared to reading. I’ve finished 6 books this month already."
"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."
"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."
"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"
"It is great for me to learn something from the book without reading it."
"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."
"Makes me feel smarter every time before going to work"
